Title :
Rainfall Rate and Rain Attenuation Model in Bangkok Thailand
Author :
Chankeaw, Natthapong ; Udomariyasap, Pongputhai ; Lakanchanh, Donekeo ; Noppanakeepong, Suthichai ; Leelaruji, Nipha
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
This paper describes the measurement of rainfall rate at King Mongkut´s Institute of Technology Ladkrabang (KMITL), Bangkok, Thailand, by using satellite signal from Thaicom5. Three years measurement of rainfall rate are presented. The experimental results indicate that the measured rainfall rate are 90mm/hr in 2005, 94 mm/hr in 2006 and 102 mm/hr in 2007. Moreover, we have developed new modify prediction model of rain attenuation by ITU-R rain attenuation model. The model provides for prediction of annual and for expected year to year variations. This model applied to collecte data compared with ITU-R model. From the results of prediction model at KMITL, we found that the highest rainfall rate 102 mm/hr in 2007 cause to signal attenuate 14.34 dB.
Keywords :
atmospheric techniques; microwave links; rain; satellite communication; tropospheric electromagnetic wave propagation; King Mongkut Institute of Technology; Ku band satellite communication links; radiowave propagation; rain attenuation model; rainfall rate measurement; Artificial satellites; Attenuation measurement; Azimuth; Frequency; Information technology; Polarization; Predictive models; Rain; Satellite broadcasting; Satellite communication; ITU-R model; KMITL model; Ku-band satellite signal propagation; Rain attenuation; Yearly cumulative time of rainfall rate;
Conference_Titel :
Communications and Information Technologies, 2008. ISCIT 2008. International Symposium on
Conference_Location :
Lao
Print_ISBN :
978-1-4244-2335-4
Electronic_ISBN :
978-1-4244-2336-1
DOI :
10.1109/ISCIT.2008.4700202
